. >> reporter: meet the proudest parents on the planet, jack and jackie harbaugh. for their sons, it's just another day at the office, as their two teams prepare for the biggest game of their lives. at 49ers practice, head coach jim harbaugh watched closely as he put his team to work. not too far away, harbaugh's brother, john, guided his baltimore ravens through their drills. but ray lewis found time to crack a joke. the harbaugh brothers will go head-to-head, in what's being dubbed as the harbowl. >> no one talks to anyone. jim is quiet and guarded. and john is quiet and guarded. >> reporter: their mother, is a little more optimistic. >> this is like frosting on the cake for our whole family. >> reporter: oddsmakers have the 49ers favored by 3 1/2 points. but the super bowl is in new orleans. so, if you want a prediction, ask the experts at reverend zombie's house of voodoo. even then, there's no clear answer. >> i can't really say. but i can say that it looks -- you're looking pretty good. i would shore up the offense, though. >> reporter: for new orleans, all o